Invention Grant
US07696267B2 Asphalt composition containing hydrogenated conjugated diene copolymer
有权
含有氢化共轭二烯共聚物的沥青组合物
- Patent Title: Asphalt composition containing hydrogenated conjugated diene copolymer
- Patent Title (中): 含有氢化共轭二烯共聚物的沥青组合物
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Application No.: US11727839Application Date: 2007-03-28
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Publication No.: US07696267B2Publication Date: 2010-04-13
- Inventor: Masahiro Sasagawa , Toshinori Shiraki , Shigeo Nakajima
- Applicant: Masahiro Sasagawa , Toshinori Shiraki , Shigeo Nakajima
- Applicant Address: JP Tokyo
- Assignee: Asahi Kasei Chemicals Corporation
- Current Assignee: Asahi Kasei Chemicals Corporation
- Current Assignee Address: JP Tokyo
- Agency: Staas & Halsey LLP
- Priority: JP2003-360956 20031021
- Main IPC: C08L95/00
- IPC: C08L95/00 ; C08F36/00 ; C08F8/00

Abstract:
An asphalt composition comprising from 0.5 to 50 parts by weight of a hydrogenated conjugated diene copolymer (a) and 100 parts by weight of asphalt (b), wherein the hydrogenated conjugated diene copolymer (a) comprises a polymer block (A) comprising vinyl aromatic monomer units and at least one hydrogenated copolymer block (B) obtained by hydrogenation of a non-hydrogenated random copolymer block comprising conjugated diene monomer units and vinyl aromatic monomer units, the hydrogenated conjugated diene copolymer (a) having the following characteristics (1) to (5): (1) the content of the vinyl aromatic monomer units is more than 30% and not more than 60% by weight per weight of the hydrogenated conjugated diene copolymer; (2) the content of the polymer block (A) is from 5% to 50% by weight per weight of the hydrogenated copolymer; (3) the weight average molecular weight is from 30,000 to 500,000; (4) the percentage of hydrogenation of the double bonds in the conjugated diene monomer units is from 60% to 100%; and (5) at least one peak of the loss tangent (tan δ) is present in the range of from −40° C. to less than −10° C. in a dynamic viscoelastic spectrum obtained with respect to the hydrogenated copolymer.
Public/Granted literature
- US20070179220A1 Asphalt composition containing hydrogenated conjugated diene copolymer Public/Granted day:2007-08-02
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